The International Commission on Stratigraphy (ICS), sometimes referred to by the unofficial name "International Stratigraphic Commission" is a daughter or major subcommittee grade scientific daughter organization that concerns itself with stratigraphy, geological, and geochronological matters on a global scale.

Chart

Click here (PDF or JPG) to download the latest version (v2018/02) of the International Chronostratigraphic Chart.